Traffic control will be in place from this morning on Lawrence Hargrave Drive at Stanwell Park and remain for the next couple of days.
Transport for NSW said maintenance crews will be conducting slope stabilisation work and vegetation removal between Chellow Dene Avenue and Lady Wakehurst Drive.
A reduced 40km/h speed limit and lane closures will be in place between 7.30am and 4pm today and tomorrow.
Motorists are advised to allow up to five minutes additional travel time and to follow the directions of signs and traffic control.
More works are scheduled for the first two weeks of February.
Image: Travis Winks